NOx Storage-Reduction Characteristics of Ba-Based Lean NOx Trap Catalysts Subjected to Simulated Road Aging

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Catalysis Today

DOI:https://doi.org/10.1016/j.cattod.2009.12.009· OSTI ID:981422

Ji, Yaying ^[1]; Fisk, Courtney ^[1]; Easterling, Vencon ^[1]; Graham, Uschi ^[1]; Poole, Adam ^[1]; Crocker, Mark ^[1]; Choi, Jae-Soon ^[2]; Partridge, Jr, William P ^[2]; Wilson, Karen ^[3]

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1. University of Kentucky
2. ORNL
3. University of York, UK

Although Lean NO{sub x} Trap (LNT) catalyst technology has made significant strides in recent years, the issue of LNT durability remains problematic. Following on from our previous research concerning the effect of ceria addition on LNT preformance, in this study we focus on the role of ceria in ameliorating the deterioration of Ba-based LNT catalysts during aging. Indeed, we have observed that spectacular improvements in LNT durability can be achieved through the incorporation of CeO{sub 2}-ZrO{sub 2} into the LNT formulation, and, to a lesser extent, La-stabilized ceria.

• Research Organization: Oak Ridge National Laboratory (ORNL); Fuels, Engines and Emissions Research Center
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE); ME USDOE - Office of Management, Budget, and Evaluation; ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 981422
• Journal Information: Catalysis Today, Journal Name: Catalysis Today Journal Issue: 3-4 Vol. 151; ISSN 0920-5861; ISSN CATTEA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AGING
CATALYSTS
ROADS
TRAPS